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    • 6. 发明授权
    • Active vibration control system for attenuating engine generated
vibrations in a vehicle
    • 用于衰减发动机在车辆中产生的振动的主动振动控制系统
    • US5332061A
    • 1994-07-26
    • US30965
    • 1993-03-12
    • Kamal N. MajeedJohn F. HoyingJoan B. Arwine
    • Kamal N. MajeedJohn F. HoyingJoan B. Arwine
    • B60K5/12F16F15/02G10K11/178B62D131/00
    • G10K11/1788B60K5/1283F16F15/02G10K2210/1282G10K2210/1291Y10S180/902
    • An active vibration control (AVC) system is disclosed for attenuating vibrational frequency components generated by an engine and transferred through an engine mounting unit to vibrate a motor vehicle body. The motor vehicle is characterized by sprung mass and unsprung mass natural resonant frequencies at which the body also vibrates when the vehicle is driven over an undulating road surface. The AVC system operates by generating input signals representing different vibrational frequency components generated by the engine based upon sensed changes in engine rotation. Each input signal is filtered by an adaptive filter to produce a respective output signal. The output signals are summed to produce a canceling signal for driving an inertial mass shaker mounted on the body. The shaker inversely vibrates the body with respect to the different vibrational frequency components transferred to the body from the engine. A vibration sensor mounted to the body proximate the shaker monitors body vibration and develops a representative error signal. Vibrational components associated with the sprung and unsprung mass natural resonant frequencies are substantially removed from the error signal using a dual notch filter. The filtered error signal is then used to adjust the filtering characteristics of the adaptive filter to minimize vibration of the body caused by the different vibrational frequency components transferred to the body from the engine.
    • 公开了一种主动振动控制(AVC)系统,用于衰减由发动机产生的并通过发动机安装单元传递的振动频率分量,以振动机动车体。 机动车辆的特征在于悬挂质量和非簧载质量的自然谐振频率,当车辆被驱动在起伏的路面上时,身体也振动。 AVC系统通过基于感测到的发动机旋转变化产生表示由发动机产生的不同振动频率分量的输入信号。 每个输入信号由自适应滤波器滤波以产生相应的输出信号。 将输出信号求和以产生用于驱动安装在身体上的惯性摇动器的取消信号。 振动器相对于从发动机传递到身体的不同振动频率成分使身体相反地振动。 安装在震动器附近的主体的振动传感器监测身体振动并产生代表性的误差信号。 与使用双陷波滤波器相比,与弹簧和非簧载质量天体谐振频率相关联的振动分量基本上从误差信号中去除。 滤波后的误差信号然后被用于调整自适应滤波器的滤波特性,以最小化由从发动机转移到身体的不同振动频率分量引起的身体振动。
    • 8. 发明授权
    • On/off semi-active suspension control
    • 开/关半主动悬架控制
    • US5062657A
    • 1991-11-05
    • US614813
    • 1990-11-16
    • Kamal N. Majeed
    • Kamal N. Majeed
    • B60G17/018F16F9/46
    • B60G17/018F16F9/46B60G2202/413B60G2202/42B60G2400/102B60G2400/106B60G2400/204B60G2400/206B60G2400/252B60G2400/40B60G2400/60B60G2500/10B60G2600/02B60G2600/14B60G2600/16B60G2600/18B60G2600/60B60G2600/604B60G2600/70B60G2600/76B60G2800/014
    • A controlled suspension for a wheeled vehicle includes a damper between the vehicle body and wheel, the damper being switchable, at a frequency sufficient for the control of resonant wheel vibrations, between a first mode of operation characterized by a high damping force and a second mode of operation having a low damping force. A control repeatedly derives from sensed vehicle suspension related operating variables desired force to be applied between the body and wheel in order to produce a desired suspension behavior determines whether that force result in active or dissipative suspension power. The control further stores a threshold and controls the damper for each derivation so that (1) the damper operates in its second mode of operation when the desired force would produce active power, (2) the damper operates in its first mode of operation when the desired force exceeds the threshold and would produce dissipative power, and (3) the damper operates in its second mode of operation when the desired force is less than the threshold and would produce dissipative power.
    • 用于轮式车辆的受控悬架包括在车身和车轮之间的阻尼器,在以特别是高阻尼力的第一操作模式和第二模式之间,阻尼器可以以足以控制谐振轮振动的频率切换 的操作具有低阻尼力。 控制重复地从感测的车辆悬架相关的操作变量中导出,以便在车体和车轮之间施加期望的力以产生期望的悬挂行为来确定该力是否导致主动或耗散悬架动力。 该控制进一步存储阈值并控制每个推导的阻尼器,使得(1)当期望的力产生有功功率时,阻尼器在其第二操作模式下操作,(2)当阻尼器在其第一操作模式下工作时 期望的力超过阈值并且将产生耗散功率,并且(3)当所需力小于阈值时,阻尼器在其第二操作模式下操作并且将产生耗散功率。
    • 9. 发明授权
    • Continuously variable damping system
    • 连续变阻尼系统
    • US5559700A
    • 1996-09-24
    • US409441
    • 1995-03-27
    • Kamal N. MajeedScott A. Stacey
    • Kamal N. MajeedScott A. Stacey
    • B60G17/018B60G17/00
    • B60G17/018B60G2500/10B60G2600/60B60G2600/90
    • A method of controlling a vehicle suspension system including a real time continuously variable damper comprising the steps of: (a) determining a present actuator command for controlling damping force of the damper; (b) comparing the present actuator command to a previous actuator command to determine a difference value of the actuator commands; (c) if the difference value is positive, limiting the difference value to a positive threshold; (d) if the difference value is negative, limiting the difference value to a negative threshold, wherein the negative threshold has a magnitude greater than a magnitude of the positive threshold; (e) determining an output actuator command responsive to the difference value; and (f) outputting the output actuator command to the damper to control damper force, wherein the limiting of the difference value to the positive threshold reduces suspension harshness and audible noise and wherein the limiting of the difference value to the negative threshold reduces suspension audible noise.
    • 一种控制包括实时连续可变阻尼器的车辆悬架系统的方法,包括以下步骤:(a)确定用于控制阻尼器的阻尼力的当前致动器指令; (b)将所述致动器命令与先前的致动器命令进行比较,以确定致动器命令的差值; (c)如果差值为正,则将差值限制为正阈值; (d)如果所述差值为负,则将所述差值限制为负阈值,其中所述负阈值具有大于所述正阈值的幅度的幅度; (e)响应于所述差值确定输出致动器命令; 和(f)将输出致动器命令输出到阻尼器以控制阻尼器力,其中将差值与正阈值的限制减小悬架粗糙度和可听见噪声,并且其中将差值限制到负阈值减小悬架可听噪声 。